![]() ![]() Cloaca - Organ through which the products of the frogs digestive and urogenital system pass when discharged from the body.Spleen - Organ in the frog’s circulatory system that makes, stores, and destroys blood cells.Fat Bodies - Masses of fat in the body cavities of frogs.Urinary Bladder - The organ that collects and stores urine until released.Liver - Secretes bile and processes digested food molecules.Large Intestine - Posterior organ of the digestive system which stores undigested food. ![]() Pancreas - Gland which secretes digestive enzymes into the duodenum.Duodenum - The anterior (front) part of the small intestine into which food passes from the stomach.Small Intestine - The principal organ of digestion and absorption of digested food.Stomach - Stores food and mixes it with enzymes to begin digestion.Cloacal Opening - Opening of cloaca through which undigested food, urine, eggs, and sperm are passed.įunctions of the Internal Anatomy of a Frog:.Nictitating Membrane - A transparent part of a frog’s lower eyelid that moves over the eye to clean it and protect it.Eustachian tube openings - Openings in the mouth that lead to tubes that connect to the middle ear to equalize air pressureįunctions of the External Anatomy of the Frog.Vomerine Teeth - Small projections in the top of a frog’s mouth that function in holding and captured prey.Maxillary Teeth - Sharp teeth in the maxilla of a frogs mouth that function in holding captured prey.Tongue - Muscular structure attached to the front of the mouth which is extended to catch insects (its food).Glottis - The opening from the mouth into the respiratory system.Tympanic Membrane - The eardrum - receives sound waves.Esophagus - Tube that connects the mouth and the stomach in a frog.External nares or nostrils - Anterior openings for the entry or exit of air.Internal Anatomy of the Frog’s Head Internal Nares Maxillary Teeth Esophagus VomerineTeeth Glottis Tongue Eustachian tube openingįunctions of the body parts that make up the frog’s head The thumb pads of males are enlarged at the base as in the drawing on the right.Įxternal Anatomy of the Frog’s Head Nictating Membrane Frontal Membrane Tympanic Membrane External Nares Anterior-near the front or the head Posterior Anterior Ventralĭetermine if your frog is a Male or Female The sex of a frog may be determined externally by examining the thumb pads on the front feet.Posterior-on or near the behind or back. ![]() Ventral-on or relating to the underside of an animal (opposite of dorsal). ![]()
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